Aspects of this disclosure describe a multi-pass printer having a photoreceptor device mounted on an axis, a developer that is arranged adjacent to the photoreceptor device and is movable between a first position and a second position, and a camming mechanism mounted on the axis that acts upon the developer to urge the developer between the first and second positions. The camming mechanism can further include a camming disc that is mounted to rotate about the axis. The camming disc can also have an outer periphery edge having a first portion defined by a first radius and a second portion defined by a second radius. The camming mechanism can also have a developer roll spacing cam having an effective radius that maintains a spacing between the developer and the photoreceptor device.